EP 2153008 A2 20100217 - POWER TRANSMISSION SYSTEM FOR USE WITH DOWNHOLE EQUIPMENT
Title (en)
POWER TRANSMISSION SYSTEM FOR USE WITH DOWNHOLE EQUIPMENT
Title (de)
KRAFTÜBERTRAGUNGSSYSTEM ZUR VERWENDUNG MIT EINER BOHRLOCHAUSRÜSTUNG
Title (fr)
SYSTÈME DE TRANSMISSION DE PUISSANCE POUR UNE UTILISATION AVEC UN ÉQUIPEMENT D'EXTRACTION
Publication
Application
Priority
- EP 2008055440 W 20080502
- GB 0708652 A 20070504
Abstract (en)
[origin: GB2448928A] A power transmission system for use with downhole equipment in a borehole permits the use of switched reluctance motors for driving electric submersible pumps. The system comprises a power source 10 and converter 12 positioned at the surface providing a DC power supply, preferably at medium voltage, and a downhole DC/DC converter 16, connected to the power source 10 by a two-conductor cable 14, which is thinner and lighter than the conventional AC three phase cable. The converter 16 preferably outputs a lower voltage than the medium voltage. The switched reluctance motor allows more accurate start-up control and reverse operation for cleaning. When not in use, the motor may continue rotating at very low speed and its power consumption may be used to determine the viscosity of the well fluid.
IPC 8 full level
E21B 4/04 (2006.01); E21B 41/00 (2006.01); E21B 43/12 (2006.01)
CPC (source: EP GB US)
E21B 4/04 (2013.01 - EP US); E21B 41/0085 (2013.01 - EP GB US); E21B 43/128 (2013.01 - EP GB US); H02J 1/06 (2013.01 - EP GB US)
Citation (search report)
See references of WO 2008148613A2
Citation (examination)
- "Variable Frequency Drives Optimize Performance and Protection of Offshore Oil Electric Submersible Pumps - Application notes", Retrieved from the Internet <URL:http://www.ab.com/drives/energy_savings/Application%20Profiles-Whitepapers/ElecSubPump.pdf> [retrieved on 20120423]
- "Application Profile Petrochemical Pumping Solutions", Retrieved from the Internet <URL:http://literature.rockwellautomation.com/idc/groups/literature/documents/ap/petchm-ap004_-en-e.pdf> [retrieved on 20120423]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
GB 0708652 D0 20070613; GB 2448928 A 20081105; GB 2448928 B 20091209; AU 2008258750 A1 20081211; BR PI0811507 A2 20141118; CA 2685955 A1 20081211; CA 2685955 C 20160823; CN 101784744 A 20100721; CN 101784744 B 20140611; EP 2153008 A2 20100217; EP 2578793 A2 20130410; MX 2009011947 A 20100401; RU 2009144733 A 20110610; US 2010206554 A1 20100819; US 8353336 B2 20130115; WO 2008148613 A2 20081211; WO 2008148613 A3 20090129; WO 2008148613 A4 20090319
DOCDB simple family (application)
GB 0708652 A 20070504; AU 2008258750 A 20080502; BR PI0811507 A 20080502; CA 2685955 A 20080502; CN 200880022606 A 20080502; EP 08750008 A 20080502; EP 12166902 A 20080502; EP 2008055440 W 20080502; MX 2009011947 A 20080502; RU 2009144733 A 20080502; US 59888408 A 20080502